Insulator



H. .HiPWELL INSULATOR APPLICATION man JULY 22. 1919.

Patented June 28, {1921.

a rte anew UNITED STATES PATENT OFFICE.

HARRY I-I. HIIPWELL, OF PITTSBURGH, PENNSYLVANIA.

INSULATOR.

Application filed July 22,

T 0 all 20 from it may concern:

Be it known that I, HARRY H. Hirwnnn a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Insulator, of which the following is a specification.

This invention aims to insulate, in a pocket flash light, the lamp-carrying shell from the casing, without insulating the re-. flector from the casing, and, specifically, to improve the insulator which is interposed between the reflector and the shell to the end that the insulator may conform readily to the concavity of the shell.

In the drawing :--Figure 1 is a View partly in elevation and partly in section, showing a flash light embodying my improvements; Fig. 2 is a plan View of the insulator in position in the lamp-receiving shell; and Fig. 3 is a transverse sectional view taken through the shell, the reflector and the insulator which is interposed there between.

Referring to the drawing, there is shown a casing 5 in which a battery 6 is retained, a shell 7 being mounted in one end of the casing 5 and carrying a lamp 15 which is adapted to cooperate electrically with one pole 20 of the battery 6, the circuit being completed through the medium of a slidable switch 8 mounted in the casing 5 and adapted to engage the shell as shown in Fig. 1.

An insulating sheet 10 of fiber fits in the shell 7. The sheet 10 is provided with a stelliform opening 11 defining a plurality of pointed tongues 12, this construction enabling the sheet to shape itself readily to the concavity of the shell 7. The outer edge of the sheet 10 is bent to afford a peripheral Specification of Letters Patent.

Patented June 28, 1921 1919. Serial No. 312,501.

flange 13. hen the sheet 10 is mounted in the shell 7, the flange 13 of the sheet engages the outer peripheral edge of the shell, and the reflector 14 is engaged with the insulating sheet. The usual bulls-eye glass 16 is mounted in the end of the casing and, together with a thimble 21. retains the shell 7 and other parts in the casing.

I claim l. A pocket flash-light comprising a concaved lampcarrying shell; a concaved reflector fitting within the shell and conforming closely to the shape of the shell; and a sheet of insulating material located between the reflector and the shell and terminating in a flange engaging the peripheral edge of the shell, the reflector being extended outwardly about the flange.

2. A pocket flash-light comprising a concaved bowl-lil e shell; a similarly shaped reflector fitting within the shell and conforming closely to the shape of the shell; and a sheet of insulating material between the reflector and the shell and conforming to the concavity of the shell, the sheet and the reflector having openings whereby a lamp may be assembled with the shell; the opening of the sheet being stellitorm and defining a plurality of pointed tongues which facilitate the conforming of the sheet to the reflector and the shell, about the openings in the reflector and the shell.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

HARRY H. HIPWELL.

\Vitnesses EDWARD H. LANG, EDWARD G. LANG. 

